I feel like the little graph in the vocabulary drop down is a little misleading when compared to the actual scope of the app. It implies knowledge of 5000 words, which would assume that the creator(s) of the app is/are aware of the existence of at least 5000 words... otherwise the graph would be false information.

Are these other words unnecessary as people would pick them up naturally or is there some other reason that the other 1226 words use to construct the graph aren't present?

As stated on a previous post, our English-Spanish course is still in the making. This means we will continue adding lexical units in small batches (the latests one was last week) until we complete the module (5000 units), probably by the beginning of 2018.

Looking forward to it. I am doing my daily practice so I think by the time you guys have the whole course ready, I will be ready to start the upcoming units. In the meantime, I will review some words that I found unusual and use other resources to improve my Spanish.